WASHINGTON, April 17 -- US President Donald Trump has claimed that Iran has agreed to hand over its stockpile of enriched uranium, describing it as a potential breakthrough in ongoing nuclear negotiations between Washington and Tehran.

Read More: Trump claims Iran agreed to not to pursue nuclear weapons

Speaking to reporters outside the White House, Trump said both sides were "very close" to reaching a broader agreement. He stated that Iran had agreed to return what he referred to as "nuclear dust," a term he used to describe enriched uranium material that can be used in nuclear weapons development. However, Iranian officials have not publicly confirmed any such arrangement.

The discussions are part of long-running negotiations aimed a...